Hi, all

I followed the earlier string on propagation media and had a couple of questions: (1) to those of you who tout the virtues of coconut coir, do you use it by itself or add, say, perlite to the mix? (2) I can't find the LA4 aggregate (Sunshine Mix) that George Mander recommends. They say it is "formulated with Canadian Sphagnum peat moss, coarse grade perlite, gypsum, Dolomitic lime, and our long-lasting wetting agent." Anyone know what this "wetting agent" might be?